When it comes to our beloved ''good ol' hockey game, '' humour abounds in Canada. The Hockey Joke Book shows you just how funny the sport, its teams and its toothless players can be: * Q: What do the Ottawa Senators and the Titanic have in common? A: They both look good until they hit the ice * Q: What's the difference between the Calgary Flames and a bra? A: A bra has two cups * Four out of five dentists surveyed recommend playing hockey. * Plus...